hi. i am a physicist not an engineer so please don't attack me for having no clue.
anyway, i've got a PWM operating at 350hz. i want it to be at 35hz. i want the same duty cycle (averaged!) though.
my idea to do this is the following:
take that signal (which is 14V), run it over a resistor to drop it down to 3 or so.
run that lower voltage signal into a counter
let the counter count to 5 pulses and then turn on a latching switch
the latching switch turns on a FET
let the counter count five more pulses and tell the switch to shut off the FET
repeat.
is this goofy?
also, what happens if i don't get modulable, by five, number of pulses? does this means it stays on...is there a way to assess the signal and shut it off i only get a few pulses? or, should i do something different like measure how long it takes to get five pulses and store that somehow and then when i would normally switch on, just run for that time and then reset the clock?
help!!! please.
anyway, i've got a PWM operating at 350hz. i want it to be at 35hz. i want the same duty cycle (averaged!) though.
my idea to do this is the following:
take that signal (which is 14V), run it over a resistor to drop it down to 3 or so.
run that lower voltage signal into a counter
let the counter count to 5 pulses and then turn on a latching switch
the latching switch turns on a FET
let the counter count five more pulses and tell the switch to shut off the FET
repeat.
is this goofy?
also, what happens if i don't get modulable, by five, number of pulses? does this means it stays on...is there a way to assess the signal and shut it off i only get a few pulses? or, should i do something different like measure how long it takes to get five pulses and store that somehow and then when i would normally switch on, just run for that time and then reset the clock?
help!!! please.